Finding the Fourth Proportional to 2,563.01, 3,539.27 and 1,620.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563.01 : 3,539.27 = 1,620.47 : x
2. Step 2: Convert to fraction form
   2,563.01/3,539.27 = 1,620.47/x
3. Step 3: Cross multiply
   2,563.01x = 3,539.27 × 1,620.47
4. Step 4: Simplify right side
   2,563.01x = 5,735,280.86
5. Step 5: Solve for x
   x = 5,735,280.86/2,563.01
6. Step 6: Final answer
   x = 2,237.71